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Stockholders' Equity (Additional Information) (Details) - USD ($)
$ / shares in Units, $ in Millions
3 Months Ended 12 Months Ended
Jan. 31, 2021
Nov. 01, 2020
Nov. 03, 2019
Class of Stock [Line Items]      
Stock Issued During Period, Shares, New Issues     4,000,000
Preferred stock, dividend rate, Percentage 8.00% 8.00%  
Preferred stock, Par value per share $ 0.001 $ 0.001  
Preferred stock dividend obligation $ 26 $ 27  
Minimum [Member]      
Class of Stock [Line Items]      
Convertible preferred stock, Shares issuable upon conversion 3.0637    
Maximum [Member]      
Class of Stock [Line Items]      
Convertible preferred stock, Shares issuable upon conversion 3.5811